xworm | 28041fc75ea0dd89b4cfa6338ff7dd3ef053bf5e49eca14f6d8e4acc003c9c6b

Resubmissions

02/09/2024, 04:11

240902-erx5ws1ekl 10

31/08/2024, 15:44

240831-s6y8dssajf 10

31/08/2024, 15:41

240831-s4ytva1gph 10

31/08/2024, 15:35

240831-s1fh4a1fjk 10

Analysis

max time kernel
133s
max time network
138s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
31/08/2024, 15:44

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General

Target

XClient.exe
Size

84KB
MD5

13f12b20731a141144d59aef56828f78
SHA1

2aef63a0f584914b022ea7d039bd431fa99520b3
SHA256

28041fc75ea0dd89b4cfa6338ff7dd3ef053bf5e49eca14f6d8e4acc003c9c6b
SHA512

19f9aeb3ceed2cd0ab93e0f449174de9f07afba41f38c620a1480b052c18ce898d52b9c90f3cfe83611064b4b6cf7444041a4b1d52de214811436975802bcbaa
SSDEEP

1536:E4VFkamGxes+ESPmWnz5fH0hgThsipZR8beJKNlG8V6f7/7zOD5gfRJoBP:E4VNxedPmWt04/UbeSly7/vOD5c4V

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

178.215.236.68:7000

Attributes

install_file
USB.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral3/memory/2268-1-0x0000000000680000-0x000000000069C000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2704	powershell.exe
3012	powershell.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
1	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4364	timeout.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2704	powershell.exe
2704	powershell.exe
2704	powershell.exe
3012	powershell.exe
3012	powershell.exe
3012	powershell.exe
2268	XClient.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeDebugPrivilege	2268	XClient.exe
Token: SeDebugPrivilege	2704	powershell.exe
Token: SeIncreaseQuotaPrivilege	2704	powershell.exe
Token: SeSecurityPrivilege	2704	powershell.exe
Token: SeTakeOwnershipPrivilege	2704	powershell.exe
Token: SeLoadDriverPrivilege	2704	powershell.exe
Token: SeSystemProfilePrivilege	2704	powershell.exe
Token: SeSystemtimePrivilege	2704	powershell.exe
Token: SeProfSingleProcessPrivilege	2704	powershell.exe
Token: SeIncBasePriorityPrivilege	2704	powershell.exe
Token: SeCreatePagefilePrivilege	2704	powershell.exe
Token: SeBackupPrivilege	2704	powershell.exe
Token: SeRestorePrivilege	2704	powershell.exe
Token: SeShutdownPrivilege	2704	powershell.exe
Token: SeDebugPrivilege	2704	powershell.exe
Token: SeSystemEnvironmentPrivilege	2704	powershell.exe
Token: SeRemoteShutdownPrivilege	2704	powershell.exe
Token: SeUndockPrivilege	2704	powershell.exe
Token: SeManageVolumePrivilege	2704	powershell.exe
Token: 33	2704	powershell.exe
Token: 34	2704	powershell.exe
Token: 35	2704	powershell.exe
Token: 36	2704	powershell.exe
Token: SeDebugPrivilege	3012	powershell.exe
Token: SeIncreaseQuotaPrivilege	3012	powershell.exe
Token: SeSecurityPrivilege	3012	powershell.exe
Token: SeTakeOwnershipPrivilege	3012	powershell.exe
Token: SeLoadDriverPrivilege	3012	powershell.exe
Token: SeSystemProfilePrivilege	3012	powershell.exe
Token: SeSystemtimePrivilege	3012	powershell.exe
Token: SeProfSingleProcessPrivilege	3012	powershell.exe
Token: SeIncBasePriorityPrivilege	3012	powershell.exe
Token: SeCreatePagefilePrivilege	3012	powershell.exe
Token: SeBackupPrivilege	3012	powershell.exe
Token: SeRestorePrivilege	3012	powershell.exe
Token: SeShutdownPrivilege	3012	powershell.exe
Token: SeDebugPrivilege	3012	powershell.exe
Token: SeSystemEnvironmentPrivilege	3012	powershell.exe
Token: SeRemoteShutdownPrivilege	3012	powershell.exe
Token: SeUndockPrivilege	3012	powershell.exe
Token: SeManageVolumePrivilege	3012	powershell.exe
Token: 33	3012	powershell.exe
Token: 34	3012	powershell.exe
Token: 35	3012	powershell.exe
Token: 36	3012	powershell.exe
Token: SeDebugPrivilege	2268	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2268	XClient.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2268 wrote to memory of 2704	2268	XClient.exe	73
PID 2268 wrote to memory of 2704	2268	XClient.exe	73
PID 2268 wrote to memory of 3012	2268	XClient.exe	76
PID 2268 wrote to memory of 3012	2268	XClient.exe	76
PID 2268 wrote to memory of 4952	2268	XClient.exe	78
PID 2268 wrote to memory of 4952	2268	XClient.exe	78
PID 4952 wrote to memory of 4364	4952	cmd.exe	80
PID 4952 wrote to memory of 4364	4952	cmd.exe	80

C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2268
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2704
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3012
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpF3C6.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4952
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4364

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
3KB

MD5
ad5cd538ca58cb28ede39c108acb5785

SHA1
1ae910026f3dbe90ed025e9e96ead2b5399be877

SHA256
c9e6cb04d6c893458d5a7e12eb575cf97c3172f5e312b1f63a667cbbc5f0c033

SHA512
c066c5d9b276a68fa636647bb29aea05bfa2292217bc77f5324d9c1d93117772ee8277e1f7cff91ec8d6b7c05ca078f929cecfdbb09582522a9067f54740af13

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
2730b717edf2e6d1801c3a78cc655a18

SHA1
6e53cbaa2648629393e33ca2499c008692e0349e

SHA256
e42de072dd0e55ce26fae8786c195b5a14ae0cdd0cb08cbbbd34684428e39168

SHA512
66df82bd9023482a95f8db46e10723ccc4b11b1b5ce7fe234de970748b5034c4b10c6051aeccff9e0219679aac76c4a98fc7eda4ca994dcd7b29c5218f879e46

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tyag15ey.q1g.ps1

Filesize
1B

MD5
c4ca4238a0b923820dcc509a6f75849b

SHA1
356a192b7913b04c54574d18c28d46e6395428ab

SHA256
6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b

SHA512
4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpF3C6.tmp.bat

Filesize
159B

MD5
5a85a897ec3eda871fe1f7b6e5be42f4

SHA1
62278b049c45ccdebd8288dc8dde1ae6e479ed18

SHA256
da1975e47c3dd463c17773114b929409268f24da3db15aca3c462d2e5a804f70

SHA512
f5609c16b12866af9f3fd5dabd33d2b4b61207fb51508dc4622a2238077d2f461a244207578567fe930230c64acf116982f75e7eda767a2ec68c77a02a090bd7

Download Submit
memory/2268-96-0x00007FF98AAA3000-0x00007FF98AAA4000-memory.dmp

Filesize
4KB

Download
memory/2268-2-0x00007FF98AAA0000-0x00007FF98B48C000-memory.dmp

Filesize
9.9MB

Download
memory/2268-0-0x00007FF98AAA3000-0x00007FF98AAA4000-memory.dmp

Filesize
4KB

Download
memory/2268-97-0x00007FF98AAA0000-0x00007FF98B48C000-memory.dmp

Filesize
9.9MB

Download
memory/2268-1-0x0000000000680000-0x000000000069C000-memory.dmp

Filesize
112KB

Download
memory/2268-102-0x00007FF98AAA0000-0x00007FF98B48C000-memory.dmp

Filesize
9.9MB

Download
memory/2704-11-0x00007FF98AAA0000-0x00007FF98B48C000-memory.dmp

Filesize
9.9MB

Download
memory/2704-12-0x000001E54FA10000-0x000001E54FA86000-memory.dmp

Filesize
472KB

Download
memory/2704-13-0x00007FF98AAA0000-0x00007FF98B48C000-memory.dmp

Filesize
9.9MB

Download
memory/2704-8-0x00007FF98AAA0000-0x00007FF98B48C000-memory.dmp

Filesize
9.9MB

Download
memory/2704-51-0x00007FF98AAA0000-0x00007FF98B48C000-memory.dmp

Filesize
9.9MB

Download
memory/2704-7-0x000001E54F860000-0x000001E54F882000-memory.dmp

Filesize
136KB

Download